3M D-2475 User manual

Intercom System
Model D-2475
Operating Instructions

FCC Information
This device complies with part 15 of the FCC rules. Operation is subject to the following
two conditions:
•This device must not cause harmful interference.
•This device must accept any interference received including interference that may
cause undesired operation.
Changes or modifications not expressly approved by the party responsible for compliance
could void the user’s authority to operate the equipment.
Trademarks
Safety Guidelines
Warranty Information
3M Information
Call 800-328-0033.

3M Model D-2475 Front Matter
© 3M 2001 January i
Table of Contents
System Description...................................................................................... 1
Introduction..............................................................................................................1
Modes of Operation..................................................................................................1
Hold Feature.............................................................................................................1
Operating Controls...................................................................................................2
Multiple Selectors ....................................................................................................2
Using the D-2475 ......................................................................................... 3
Setting Volume.........................................................................................................3
One Call Station Calling Selector ............................................................................3
More Than One Call Station Calling Selector .........................................................4
Using the Hold Feature ............................................................................................4
Calling From Selector to Call Station ......................................................................5
•Select A Specific Call Station..........................................................................5
•Use Directory Assistance .................................................................................6
All Call Mode...........................................................................................................6
Off Line Mode..........................................................................................................7
Error Messages.........................................................................................................7

3M Model D-2475 System Description
© 3M 2001 January 1
System Description
Introduction The D-2475 Intercom System provides two-way audio
communications between a central station (called a Selector) and
several remote Call Stations. It is intended for use in service
stations, convenience stores, and other applications.
Modes of Operation The system has five modes of operation described below.
Standby Mode The system is in this mode when SBY is displayed.
The Standby mode occurs when no station is
connected, no key is pressed, and the Selector is
not in Off Line mode.
Listen Mode The system is in this mode when LIS is displayed.
The Listen mode occurs when a station is
connected and the Talk key is not pressed.
Inbound audio is emitted from the Selector.
Talk Mode The system is in this mode when TLK is displayed.
The Talk mode occurs when a station is connected
and the Talk key is pressed. Audio received at the
Selector microphone is transmitted.
All Call Mode The system is in this mode when ALL CALL is
displayed. The All Call mode occurs when the
ALL CALL key is pressed. The All Call mode
allows the Selector to simultaneously connect to all
Call Stations.
Off Line Mode The system is in this mode when OFF LINE is
displayed. In this mode, the Selector is powered
on, but is silent.
Hold Feature The Hold feature allows an attendant to momentarily disconnect
from a call, greet a newer call, and return to the previous call.
::SBY
_:
: :LIS
S=01: PUMP # 01
: :TLK
S=01: PUMP # 01
: :TLK
A L L C A L L
* OFF LINE
*
UP ARROW To Exit

System Description 3M Model D-2475
3M 2001 January
2
Operating Controls
123
45 6
789
0
MENU
T
A
L
K
SP-389C
Operating controls are described below.
TALK Controls talk/listen communications. User
presses TALK button to cancel the alert
tone and to transmit outbound audio.
STD BY Controls station connection. User presses
STD BY (Standby) button to cancel a Call
Station or Selector connection.
ALL CALL Allows outbound audio connection to all
Call Stations simultaneously.
HOLD Allows disconnection from a current call
with the ability to return to that call later.
MENU/0 Allows Call Station selection through use
of the Left/Right arrows.
Up/Down Arrows Adjust Station Selector volume.
Left/Right Arrows Control Call Station selection. User
scrolls through available Call Stations by
name.
Multiple Selectors When two or more Selectors are connected, using one Selector
locks out all other Selector(s) on the same audio channel. Pressing
the TALK key on a locked out Selector results in a busy tone being
emitted.

3M Model D-2475 Using the D-2475
© 3M 2001 January 3
Using the D-2475
Setting Volume Pressing the Up/Down arrows adjusts the Selector volume through
15 levels. The new level is momentarily displayed each time an
Up/Down arrow key is pressed. On line default level is 8.
One Call Station Calling Selector
1. Customer presses Push for Service button.
Selector beeps and display shows:
•Q=01 indicating there is one call in the queue waiting to
be answered.
•Call Station number and name (station 4 in this example).
2. Attendant:
a. Holds TALK key down.
b. Speaks into microphone.
Selector stops beeping. Display:
•Clears Q=01 indicating there are no more calls in the
queue.
•Replaces SBY with TLK.
3. Attendant and customer talk back and forth. Attendant:
a. Holds TALK key down while speaking.
Display shows TLK.
b. Releases Talk key while listening.
Display replaces TLK with LIS.
4. When finished, attendant presses STD BY key.
The display shows SBY.
Q=01: :SBY
S=04: PUMP # 04
: :TLK
S=04: PUMP # 04
: :TLK
S=04: PUMP # 04
: :LIS
S=04: PUMP # 04
: :SBY
:

Using the D-2475 3M Model D-2475
3M 2001 January
4
More Than One Call Station
Calling Selector Up to 16 Call Stations can call the Selector. The system stores the
calls in a queue (list) in the order received. Q in the display shows
the number of calls in the queue. If in Standby mode, the Selector
beeps to indicate a call or calls are in the queue.
To answer:
1. Press TALK key.
Q decreases by 1 and the first Call Station number and name
in the queue is displayed (customer waiting the longest is
answered).
Illustration shows Call Station 7 connected with 2 calls in the
queue.
2. Proceed as described under Steps 3through 4 under the
previous section One Call Station Calling Selector.
3. Repeat Steps 1and 2above to answer next call.
It is possible to place a current call on hold and connect to a
different call. See Using the Hold Feature.
Using the Hold Feature The Hold feature allows an attendant to disconnect from a current
call and connect to a new call without losing the first call. This is
useful for disconnecting from a current call, momentarily greeting a
newer call, then returning to the first call. More than one call can
be placed on hold.
Assume a current connection to Call Station 12, and a second
station attempting to call.
The display shows Q=01, LIS, and the current Call Station number
and name.
To use the Hold feature:
1. Press the HOLD key during the current call connection.
The display shows HOLD = 01 (if no other calls are on hold)
and SBY.
The current call is placed on hold and the Selector beeps.
2. Press the TALK key to answer the second call (from Call
Station 8 in this example).
The display:
•Clears Q=01.
•Shows the new station number and name and TLK.
3. Press the HOLD key to place the second call on hold.
The display shows HOLD = 02 and SBY. Both calls are now
on hold.
Q=02: :TLK
S=07: PUMP # 07
Q=01: :LIS
S=12: PUMP # 12
Q=01: HOLD=01:SBY
_:Press ‘TALK’
:HOLD=01 :TLK
S=08: PUMP # 08
: HOLD=02:SBY
_:Press ‘HOLD’

3M Model D-2475 Using the D-2475
© 3M 2001 January 5
4. Press the HOLD key again.
The display shows HOLD = 01 and LIS. The second call is
still on hold and the Selector is connected to the first caller.
5. Press and release the TALK key to converse with the first
caller.
6. Press the STD BY key when finished.
The display shows HOLD = 01 and SBY and the Selector
beeps.
7. Press HOLD.
The display shows the second station number and LIS.
8. Press and release the TALK key to converse with the second
caller.
9. Press the STD BY key when finished.
Calling From Selector to Call
Station There are three ways to call from the Selector to a Call Station:
•Select a specific Call Station.
•Use directory assistance.
•Use All Call Mode. See All Call Mode.
Select A Specific Call Station
System must be in Standby mode. To select a specific Call Station:
1. Press the key associated with the Call Station being called
(Call Stations 1 through 9 are entered as one digit).
Display shows the Call Station number and name.
2. Proceed as described under Steps 2through 4 under the
previous section One Call Station Calling Selector.
: HOLD=01:LIS
S=12: PUMP # 12
: HOLD=01:SBY
_:Press ‘HOLD’
: :LIS
S=08: PUMP # 08

Using the D-2475 3M Model D-2475
3M 2001 January
6
Use Directory Assistance
Directory assistance allows searching for a Call Station by name.
The system must be in the Standby mode. To use directory
assistance:
1. From the Standby mode, press the MENU/0 key.
The display shows S = 01 and the station 1 name.
2. Do one of the following:
•Use the Left/Right Arrow keys to find the desired Call
Station.
•Select a Call Station as a starting point:
-Press a key to select a starting point.
-Use the Left/Right Arrow keys to find the desired
Call Station.
3. Proceed as described under Steps 2through 4 under the
previous section One Call Station Calling Selector.
All Call Mode The All Call mode allows the attendant to speak to all Call Stations
at once. All Call mode can be entered from Standby mode or while
a call is established. To use All Call mode:
1. Hold the ALL CALL key down.
The display shows ALL CALL and TLK.
2. Talk into the microphone.
3. Release the ALL CALL key.
The system goes to the Standby mode or to the previous call
connection.
: :TLK
A L L C A L L

3M Model D-2475 Using the D-2475
© 3M 2001 January 7
Off Line Mode The Off Line mode is the equivalent of the Selector being turned
off. In the Off Line mode, the Selector does not respond to call
requests (does not beep).
The Selector can be put in Off line mode from Standby mode. To
do this, repeatedly press the down arrow key to reach minimum
level. The display shows OFF LINE.
To exit Off Line mode and enter Standby mode, press the up arrow
key once. Audio level is set to the mid level of 8.
Error Messages The system displays one error message: NO COMMUNICATION.
If this message occurs, call your 3M authorized dealer or call 3M
Technical Support at 800-328-0033.
* OFF LINE *
UP ARROW To Exit
! E R R O R !
NO COMMUNICATION

3M Food Services Trade Department
3M Center
St. Paul, MN 55144-1000 Printed on recycled paper.
Printed in U.S.A.
© 3M 2001 January
78-6912-0724-1 Rev.C